SWAPPING OF VALUES (Without using 3rd Variable)

SWAPPING OF VALUES

(Without using 3^rd Variable)

AIM:

            To write a Shell Program to swap two values without using 3^rd Variable.

ALGORITHM:

Step 1: Start

Step 2: Read the values of ‘a’ and ‘b’

Step 3: Solve the expression, a=a + b; b=a – b; a=a – b

Step 4: Print the swapped values of ‘a’ and ‘b’

Step 5: Stop

SHELL PROGRAM:

echo "Enter Two Numbers"

read a b

a=`expr $a + $b`

b=`expr $a - $b`

a=`expr $a - $b`

echo $a $b

SAMPLE OUTPUT:

Enter Two Numbers

12 10

10 12

RESULT:

            Thus the Shell Program to swap two values without using third variable was executed and the output was verified.